Replacement

1. REPLACE VALVE GUIDE BUSHINGS

(a) Gradually heat the cylinder head to 80 - 100C (176 - 212F).

(b) Using SST and a hammer, tap out the guide bushing.

SST 09201-10000 (09201-01060), 09950-70010 (09951-07100)

(c) Using a caliper gauge, measure the bushing bore diameter of the cylinder head.

Both intake and exhaust

(d) Select a new guide bushing (STD or O/S 0.05).

If the bushing bore diameter of the cylinder head is greater than 10.306 mm (0.4057 in.), machine the bushing bore to the following dimension: 10.335 - 10.356 mm (0.4069 - 0.4077 in.)

If the bushing bore diameter of the cylinder head is greater than 10.356 mm (0.4077 in.), replace the cylinder head.

HINT: The intake bushing and the exhaust bushing differ in their sizes

(e) Gradually heat the cylinder head to 80 - 100C (176 - 212F).

(f) Using SST and a hammer, tap in a new guide bushing to the specified protrusion height.

Protrusion height:

Intake 9.2 - 9.8 mm (0.362 - 0.386 in.)

Exhaust 8.2 - 8.8 mm (0.323 - 0.346 in.)

SST 09201-10000 (09201-01060), 09950-70010 (09951-07100)

(g) Using a sharp 5.5 mm reamer, ream the guide bushing to obtain the standard specified clearance ( EM-45 ) between the guide bushing and the valve stem.

2. REPLACE SPARK PLUG TUBE GASKETS

(a) Bend the 4 ventilation case claws installed on the cylinder head cover to an angle of 90 or more.

(b) Using a screwdriver, pry out the gasket.

NOTICE: Be careful not to damage the cylinder head cover. Tape up the screwdriver tip.

(c) Using SST and a hammer, tap in a new gasket until its surface is flush with the upper edge of the cylinder head cover.

SST 09950-60010 (09551-00240, 09951-00440, 09952-06010) 09950-70010 (09951-07100)

NOTICE: Be careful of the installation direction.

(d) Apply a light coat of MP grease to the gasket lip.

(e) Put the 4 ventilation case claws back to its original position.